function sum(...args) {
  return args.reduce((p, c) => p + c, 0);
}
sum(2, 3, 5);

// 添加es6语法
const string = () => {
  return '温情key'
}

console.log(string());;

// 引入 Css 资源，Webpack才会对其打包
import './index.css'
import './index.less'
import './index.scss'

